redis集群报Sorry, can't connect to node错误

redis集群创建时报错：Sorry, can't connect to node 127.0.0.1:6001

[root@localhost redis-cluster]# ./redis-trib.rb create --replicas 1  127.0.0.1:6001 127.0.0.1:6002 127.0.0.1:6003 127.0.0.1:6004 127.0.0.1:6005 127.0.0.1:6006
>>> Creating cluster
[ERR] Sorry, can't connect to node 127.0.0.1:6001

解决：

1：ip，端口等都配置正确的话，redis不能设置密码，需要将redis.conf文件中的密码注释掉    # requirepass 123456

2：redis集群创建时报错：in `call': ERR Slot 15495 is already busy (Redis::CommandError)

将redis.conf中定义的 cluster-config-file 所在的文件删除，重启每个节点。